Searches for Ultra-Light Dark Matter in the DUNE experiment Pablo - - PowerPoint PPT Presentation

Searches for Ultra-Light Dark Matter in the DUNE experiment

Pablo Martínez-Miravé (University of Valencia) Pedro A. N. Machado (Fermilab)

DUNE BSM Physics Working Group Meeting

Ultra-Light Dark Matter Model

If an ultralight scalar couples to neutrino, it can introduce temporal variation in the measured values of particle masses. See Pedro A. N. Machado’s talk (November 2018)

• Regime in which it manifests as a temporal modulation of

the neutrino oscillation probability.

• Regime in which the modulation is averaged, leading to

Distorted Neutrino Oscillations (DiNO).

Ultra-Light Dark Matter Model

If an ultralight scalar couples to neutrino, it can introduce temporal variation in the measured values of particle masses. See Pedro A. N. Machado’s talk (November 2018)

• Regime in which it manifests as a temporal modulation of

the neutrino oscillation probability.

• Regime in which the modulation is averaged, leading to

Distorted Neutrino Oscillations (DiNO).

Why DUNE?

• Large number of events expected at the FD
• Good energy reconstruction
• Sensitivity to mass splittings

Lomb – Scargle periodogram

Identify periodic signals (similar to a Fourier analysis) when data is unequally separated.

Identify periodic signals (similar to a Fourier analysis) when data is unequally separated. False Alarm Probability to test the result (Baluev method)

Lomb – Scargle periodogram

Implementation in DUNE

• GLoBES & files from the CDR
• 3 years ν mode + 3 years ν mode
• Energy bins grouped
• Number of measurements between 30 and 600

Bounds on the frequency can be estimated. Modulation period Mass range ~ 10-20 eV – 10-23 eV

Implementation in DUNE

• GLoBES & files from the CDR
• 3 years ν mode + 3 years ν mode
• Energy bins grouped
• Number of measurements between 30 and 600

Bounds on the frequency can be estimated. Modulation period Mass range ~ 10-20 eV – 10-23 eV

ULTRA – LIGHT DM

Sensitivity in DUNE

Decreasing the number

• f measurements

improves the sensitivity to the amplitude in a smaller frequency range. Below a certain number

• f measurements the

sensitivity starts getting worse (Lomb Scargle method)

Conclusions

• Lomb-Scargle periodogram is the method to look for time

modulation in the data.

• The number of measurements and how the energy bins are

grouped affect the sensitivity of the experiment.

• For certain frequencies, modulations of ~1% or less could

be measured.

• DUNE can be Ultra Light Dark Matter detector (sensitive to

a subcomponent of the total DM)

THANK YOU

Searches for Ultra-Light Dark Matter in the DUNE experiment

SPARE SLIDES

Nov/2018 Pedro A. N. Machado | DUNE as a detector of ultra-light dark matter 1705.06740

Nov/2018 Pedro A. N. Machado | DUNE as a detector of ultra-light dark matter 1705.06740